NavigableMap: pollFirstEntry() : NavigableMap « java.util « Java by API






  1. Java by API
  2. java.util
  3. NavigableMap

NavigableMap: pollFirstEntry()

 


import java.util.NavigableMap;
import java.util.TreeMap;
import java.util.Map.Entry;

public class Main {
  public static void main(String[] args) {
    NavigableMap<Integer, String> map = new TreeMap<Integer, String>();
    map.put(2, "two");
    map.put(1, "one");
    map.put(3, "three");
    System.out.println("Original map: " + map + "\n");

    Entry firstEntry = map.pollFirstEntry();
    System.out.println("First entry: " + firstEntry);
    System.out.println("After polling the first entry: " + map + "\n");

    Entry lastEntry = map.pollLastEntry();
    System.out.println("Last entry:" + lastEntry);
    System.out.println("After polling last entry:" + map);
  }
}








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1.NavigableMap: ceilingKey(T key)
2.NavigableMap: floorKey(T key)
3.NavigableMap: higherKey(String key)
4.NavigableMap: lastEntry()
5.NavigableMap: lowerKey(T key)
6.NavigableMap: navigableKeySet()
7.NavigableMap: pollLastEntry()